Incandescent-lamp socket.



No. 893,873. PATENTED JULY 21, 1908. W. F. BITTER.-

INGANDESGENT LAMP-SOCKET.

APPLICATION FILED HAY13. 1907.

in-Vania] new;

' To all whom it may concern? UNITED STATES @FFTCE.

WILLIAM F. BITTER, or CINCINNATI, 01110.

' INCANDIESCENT-LAMP SOCKET.

Specification of Letters Patent.

Patented July 21, 1908.

Application filed may 13, 1907. Serial No. 373,425.

-i3eit known that I, WILLIAM F. RITTER, a c1t1zenofthe United States ofAmerica, and a ,IQ-SldGHl) of Cincinnati, in the county of {Hamilton andState of Ohio, have invented certain newand useful Improvements inIncandescent-Lamp Sockets, of. which the following is a specification.

This invention relates to an improvement tin i c ndescent electric-lampsockets, and

- its object is to relieve the bared ends of the suspension electricfeed-wires of any tensile or other strain and to supply a thoroughinsulator lining and barrier within the dome vof said socket inwhich thelower divergent T "ends of said lam wires. house and pass to 'lamp cordaduly knotted in accordance with partition with a the lamp-termina s. p I

The invention consists in the provision in connection with anincandescent electric lamp socket, of a lining made of fiber or othersuitable insulating material, suchv being shaped so that its bodyportion conforms to the interior of the dome portion of said socket andits central portion'being extended downward to form a transverseerforation in said body portion at either si' e of saidpartition,whereby the lower divergent ends of, the untwisted portion'of the lam-ecord are permitted to pass downward an then knotted on the interioro'fthelining, with a: knot at either side of saidpendegnt artition andwith the extreme lowerge s of. said; divergent wires dulybared ofinsulation for proper connection with the terminalsofithelamp-socket.

In the accompanyi, drawings, Figure 1 is a transverse section ts on onthe dotted-line b, b, of Fig.;,-2 ,'-of ,the ic'ap portion of a lamp-..socket =-contam ing Tiny mproved insulatorlining and ehowing'f afragmentary ortion of the lamp socket shell and, also, t e two the planf and*purpose of my invention herein Fig. 2 a-bottorn-sectional plantaken on the dotteddineaa of Fig. 1 slmiwing the socketcap, my improvedinsuletordinmg therefor and my improved rnanner of knotting thelower-ends ofthef -lamp -wires within said lininggFig. 3, a die-gra of-apiece of insulator materiahfshowing it a'si't appears prior to beingbout and sha dinto the form seen in Fig'. l"-Fig. 4,5. plain view of theblank shown in ig33, but with the next step taken in its processofbending or she 'ingi, such bending beingFta-ken on thepa'ral elottedlines seen in ig. 3; Fig. 5, a bottom'plan of, the opposite ends 7,7 being semicircular ward through the insulator-bushing 4i and view ofthe insulator-lining, in its finished state; and Fig. 6, a sideelevation of the insulator-lining as it appears when fully shaped.

In these views, 1 represents the u per portion ofithe customary metalshell oi a lampsocket; 2, the metal cap, of dome-shape and telescopingthe upper end of said shell for suitable attachment thereto; 3, theusual .hollow boss or metal protuberance on the cap 2; and 4, the usualinsulator-bushing in the protuberance 3.

- 5 represents a lining of fiber or other suitable insulating materialplaced within the dome of the cap 2 and preferably shaped to conform tothe inner face of said'dome. This lining is com osed of a strip ofmaterial cut into the blan fol-in seen in Fig. 3, with the V-shapeindentations 6, 6 at either side thereand with twov erforations 8, 8made therein at a suitable istance a art from the center of the blank. Acentra pendent-extension,

forming a partition '9, is made in the blank,

the'bends in the blank, to produce such partition, being made on thethree parallel dottedlines 1Q, seen in said Fig. 3 and the outer walls11, 11 of the lining are produced by concaving the semicircular ends 7,7 of the blank so as to roperly fit within the cap 2 as best seen inig. 1. The material comprising the linin is made pliable between the twosemicircu a1 concaved ends so that the bends may be readily made thereinfor producing the partition 9, and the whole is readily inserted intoplace within the cap 2 sothat the holes or prforationsS, ,8 ,ap' roach,with a space between them, just be ow the orifice or ppssage-way of thebushing 4, as best seen in ig. 1; ThepartitionQ serves as a ready meansof i'landhng the lining to and from place in the dome of the cap 2.

' The lamp-cord composed oi the two insulated wires 12, 12 as customary,passes down and the central partition 9 duly insulates the two knots l3,13 from each other, such partition also separating said knots from eachother to prevent abrasion, or rubbing or bear ing contact with eachother. The Weight of the lamp and its supporting-socket is entirely onthe knots 13, 13 made in the cords, so that there is no tension Whateveron the bared connecting ends of the Wires With the lampterminals, thuspreventing .ny undue separation of said bared ends fromthelarn'p-terininals and any consequent sparking or shortcircuitingWithin the lamp-socket device. The knots 13 are readily made in thecords and, being single ones, do not occupy materiel EOOHIOI spaceWithin the upper chamber, such as might be the css-e ii' the centralpartition 9 were omitted and a single knot made in the twisted double.cord that would then pass through but a single central hole in thelining.

1. in a device of the character described, a lining composed ofinsulator material With its outer Walls sh aped to correspond to thedome of said device and having a central, pendent transverse partitionwith a holeor perforation'at either side said partition for thepascords.

aracter described, a dome-cap of an.1ntesage of the separated lam 2. Ina device of the c the combination with rior insulator-lining, transversecentral partition made therein and a perforation at either side of saidpartition, and lamp-cords, each havin a single knot made therein andeach passing through one of said perforations in the lining.

3 In a device of the character described, a socket-cap lining 0on1 osedof a blank of insulator material, suc blank having semicircular oppositeend-sections, V-shape indentations at either side and intermediate saidend sections and two perforations made therein a suitable distance apartat either side the center of the blank, such blank be ing adapted to befolded along three parallel lines to form a central transverse partitionin the blank-When shaped for use said device.

WILLIAM F. BITTER.

Witnesses:

Jonn ELIAS Jones, NORMA Knisnn.

such lining having a-

